One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,11)(4,15)(5,9)(6,10)(7,14)(8,13)(12,16)(17,18,23,20)(19,24,21,25)(22,26,30,28)(27,31,29,32)(33,34,38,42)(35,43,46,39)(36,47,45,40)(37,41,44,48)(1,3)(2,7)(4,12)(5,13)(6,14)(8,16)(9,15)(10,11)(17,19,23,21)(18,24,20,25)(22,27,30,29)(26,31,28,32)(33,35,38,46)(34,39,42,43)(36,37,45,44)(40,41,47,48)(1,2,6,10)(3,7,14,11)(4,8,13,15)(5,9,12,16)(17,19,23,21)(18,25,20,24)(22,27,30,29)(26,32,28,31)(33,36,38,45)(34,40,42,47)(35,44,46,37)(39,48,43,41)(1,2)(3,11)(4,8)(5,16)(6,10)(7,14)(9,12)(13,15)(17,20,23,18)(19,24,21,25)(22,28,30,26)(27,31,29,32)(33,35)(34,39)(36,44)(37,45)(38,46)(40,48)(41,47)(42,43)(1,4)(2,8)(3,12)(5,14)(6,13)(7,16)(9,11)(10,15)(17,21,23,19)(18,24,20,25)(22,29,30,27)(26,31,28,32)(33,34)(35,39)(36,40)(37,41)(38,42)(43,46)(44,48)(45,47)(1,5,6,12)(2,9,10,16)(3,13,14,4)(7,15,11,8)(17,22,23,30)(18,26,20,28)(19,27,21,29)(24,31,25,32)(33,37,38,44)(34,41,42,48)(35,45,46,36)(39,47,43,40)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.